cygwin command line option should be renamed to gcc
MATLAB on Windows now supports the MinGW toolchain, and indeed adding it is just a few clicks via the "Add-Ins" button. The MinGW toolchain seems to work fine with the cygwin command line option, as one would expect. Renaming the command line option to GCC and documenting that it can use either Cygwin or MinGW installed via "Add-Ins" would seem to be sensible.